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i'm a little confused here after i saw this

U= KE + PE + H(enthalpy)----------------------1

while it is known that

H=U+PV------------------2

i'm sure that eqn 2 is true but do you think with m that 1 is not true ??

the problem is that my instructor use the eqn 1 in 1st law

Q-W= delta(KE +PE+H)

??????????????!!!!!!!!!!

thanks

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# Internal energy enthalpy problem

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